Vaporizer



Patented @et 2l, i924,

NETE

i EHEIM, OF BISSENDORF, GERMANY, ASSIGNOB- TO' CRUDE OIL VAPORIZER GOM- PANY, INC., A CORPORATION OF NEW YORK.

VAPORIZER.

Application led November 2, 1923.

To all t0/7,0m t may concern.'

Be it known that I, KARL RHEIM, a citizen of Germany, residing at Bissendorf, Hanover, Germany, ha ve invented certain new and useful Improvements in Vaporizers, of which the following is a specification. y

The invention relates to an improvement in vaporizers designed to permit the utilization of a heavier hydrocarbon fuel than the usual gasoline employed as a fuel for explosive engines.

The invention is generally directed to a vaporizer permitting the use at will of the usual gasoline, for example, in starting the engine and developing the required heat in the exhaust, and the use atv will of the heavier hydrocarbon fuel such as coal oil or the like, with the latter properly vaporized for use in the engine by the vaporizer, the parts being so arranged that the engine may be run altogether on gasoline or a mixture of the latterv and the heavier fuel,

The invention is more particularly directed to the specific improvement of the vaporizer construction, wherein provision is made for the desirable and convenient separation of parts to permit a proper interior cleaning, and the further provision of speciic baffles and guards, whereby the heaw'er hydrocarbon fuel is compelled in its travelk lengthwise the vaporizer to 'move in a tortuous passage in direct contact with at least two highly heated walls of the vaporizer to insure the maximum vaporization.

Thel specific type of vaporizer to whic this particular invention is directed involves the casing comprising an outer cylindrical member open at both ends, having an outlet opening for communication with an exhaust gas outlet pipe section, and an inner cylindrical member open at both ends and formed at appropriate points with inlet and outlet tubular portions which extend through the outer cylindrical member. A

' head section is arranged at the inlet end of the vaporizer, comprising an annular body bearing against and having sealed connection with the end of the outer cylindrical member of the `body and recessed in its forward face to receive the inlet end of the inner cylindrical .memben formed with a centralthreaded opening of less interior. diameter than the inner cylin- 'izer.

The head is Serial No. 672,447

drical member of the vaporizer to provide a Wall which overlies and bears upon the inner surface of the inlet end of the'inner cylindrical member. The head additionally provides a flange for the removable connection thereto of an exhaust pipe communicating with theexhaust ports of the engine. The vaporizer includes' an inner pipe section which at the inlet end is threaded to cooperate with the threaded inner portion of the head and at the opposite end provided with an integral or xed sealing block recessed on its outer surface to snugly receive the adjacent end of the inner member of the casing. A dome or end section is removably secured to the outer cylindrical member of the casing at the end opposite the inlet of the exhaust gases to compelv the exhaust gases directed through the inner removable exhaust tube section to return between the outer and inner cylindrical members of the casing vto the exhaust outlet therefrom;

' the maximum benefit from such heated walls, spiral balies are provided immediately beyond the fuel inlet in the direction of travel of the fuel, which spiral baiiles control the flow of fuel lengthwise the vapor- These .baffles comprising plate sections of a height corresponding to the similar dimension of the fuel space, each of which plate sections originate at the inlet from the carburetor and are carried about the inner tube section in the same direction in spiral formation and terminate at the outlet openings to the motor. This bale arrangement compels a dual tortuous travel ofthe fuel to permit the maximum contact of such fuel with the heated walls.

The invention is illustratedv in the accompanying drawings, in which,

Figure 1 is a perspective view illustrating tion of the same.

Figure 3 is a section on line 3--3 of Figure 2.

Figure 4 is a broken plan View showing more particularly the arrangement of the baffles.

The improved vaporizer comprises a casing, including an outer cylindrical member l, and an inner cylindrical member 2. These cylindrical members are arranged infconcentric spaced relation to provide a passage or chamber 3 between them, and are united by a spacing block 4 at the inlet end of the vaporizer, this block sealing the passage 3 at one end, the members being otherwise fully and freely open at the opposite end, with the outer member extended somewhat beyond the end of the inner member. The outer member is formed with an opening 5 and an integral lateral sleeve 6 having the usual terminal flange formation 7 to permit the removable securing thereto of an exhaust pipe 8 adapted to lead to the muier or other escape. On the opposite side of the vaporizer and near one end thereof and extending from the'inner member 2 is a short tubular isection 11, which projects through the outer member to provide a fuel inlet opening 9, and at the opposite end of said vaporizer isa similar short tubular section 11%z extending from the inner member 2 and projecting through the outer member to prof vide a vaporized fuel outlet opening 10, these tubular sections having the usual terminal;l

securing flanges 12 for the connection of a ca'rbureter relative to opening 10, and a pipe connection 29 to direct the fuel to the engine. With the carbureter 28 operating, the carbureter 30 is cut off, and fuel from carbureter 28 will pass through the pipe 29 instead of through the vaporizer, whilewith carbureter 30 alone serving the engine, the vaporized fuel passes through the outlet of the vaporizer and then through the pipe 29 to the engine. The intake connection is the p-ipe 29. At the inlet end of'thevaporizer, there isprovided a head 13 comprising an annular body of somewhat greater diameter than that 'of the outer member and having its forward face adapted' to bear against a gasket 14 overlying the spacing block 4. This head is recessed at 15 to receive the inlet end of the inner member 2, that portion of the head lying within the inner member being extended to overlie and bear upon the inner surface of said member to some extent. The head is formed with a threaded opening 16,-and the main portion of the head beyond Athe outer and inner members is of such thickness as to provide a flange for the reception of bolts 17, to be used in removably securing anl exhaust gas pipe 18 to the head. i

An inner exhaust gas tube 19 is arranged vheated walls of the fuel passage.

neiaeeo within and in concentric spaced relation to the inner member tube 2. The inner exhaust tube 19 is threaded at its inner end as at 20 to cooperate with the threaded opening 16 of the head 13, -and is provided at its opposite end with a sealing block 21, either integral or secured to such inner exhaust tube. This block 21 is recessed on its outer surface as at 22 to receive the adjacent end of the inner member and thus seal the connection, while the inner exhaust tube 19 extends beyond the end of the inner member.

The concentric spaced relation between the inner exhaust tube and the inner member provides a vaporizing chamber 23 with which the inlet and outlet openings 9 and 10 communicate, this space being sealed at one end by the head and at the opposite end by the sealing block 21. The inner exhaust tube 19 communicates with the exhaust pipe a 18, so that when the exhaust pipe is in place, the exhaust gases flow freely through the interior Aof the inner exhaust tube. A semispherical dome 24 is removably 'secured through appropriate flange construction 25 to the end of the outer member 1, remote from the exhaust inlet, this dome being shaped to direct the exhaust gases passing through the inner exhaust tube toward and into the exhaust passage 3 between the outer and inner members 1 and 2, and to the outlet 5. The exhaust gases will thus highly heat the wall of the inner member and the wall of the inner exhaust tube, and as these walls define the fuel passage or vaporizing chamber 23, said chamber will be highly heated. o

It will of course be appreciated that the longer. the fuel can be prolonged or maintained in contact with these heated walls without interfering with its proper travel as required by the suction of the engine, the more `effective will be the vaporization of such fuel. Ifthe space 23 were left unobstructed, the tendency of the fuel admitted at the inlet V9 'would be to travel directly through the lowermost portion of the space 23 to the outlet 10, and thus the full beneficial effects of the heated walls would not be obtained. To avoid this, I provide series yof baffles 27 in the space 23 which compel a tortuous travel of the fuel to insure the maximum contact between such fuel and the These ballles, as shown, comprise a pair of spaced spiral ribs 27, preferably formed on the inner exhaust tube 19. These baffles originate respectively on opposite sides of the exhaust tube and extend spirally in the same direction around the tube and terminate on opposite sides of the tube adjacent the vapor outlet opening l0. The spiral bailles are ir. the form of narrow ribs, having a height corresponding to the similar dimension of the fuel passage, and provide two spiral Al (i paths through the vaporizing chamber from the inlet opening 9 to the outlet opening l0. lit will be obvious 'from the arrangement of battles that Athe incoming fuel through the inlet 9 is thus compelled to follow two tortuous or spiral paths, involving a complete travel around the inner exhaust tube 19, beore reaching the outlet opening, so that the full or maximum effect of the heated walls defining the fuel passage 23 is thus secured.

lt is contemplated that as shown in F igure l, a carbureter indicated at 28 and designed for the control of ordinary gasoline is connected to the intake pipe 29 to the engine, this carbureter being arranged between the vaporizer and the engine so that fuel may be directed to the engine without passing through the vaporizer. A fuel supply 30 designed :tor oil or the heavier hydrocarbon uel is connected to the flange l2 of the inlet i) or' the vaporizer, and this fuel is oompelled to pass through the vaporizer and through the outlet l0 before reaching the pipe 29 leading to the engine. A proper air admission in any convenient manner is had for mixing with the oil Jfrom the supply 30.

1t will be noted from the above description that the vaporizer is of exceedingly simple construction, and that by removing the dome 24, the inner exhaust tube 19 may be readily removed, whereupon all parts of the vaporizerwhich are subject to the passage of the exhaust gases and fuel, and therefore require cleaning, may be easily reached for such purpose. The vaporizer as a Whole is simple in construction and is readily accessible, the head 13 providing an effective sealing at the inlet end of the vaporizer While at the same time providing for the convenient connection of the vaporizer and `exhaust 1 e. p 1'.ilhe battles are of simple form and their particular arrangement is most effective in securing the proper travel of the fuel in its assage through the vaporizer, it being understood that these baliles are secured to and form a part of the inner tube 19, and are removable with such tube, thereby permitting a thorough effective cleaning of the entire structure without diiiiculty.

Claims:

l. A vaporizer comprising an outer cylindrical member, an inner cylindrical member, said members being concentrically spaced to form an exhaust gas passage, an annular head engaging the inner member and formed with a central threaded opening, and an inner exhaust tube concentric with and spaced from: the inner member to form a Vaporizing chamber, said inner exhaust tube having a threaded end to engage the threaded opening in the head and rovided at the opposite end with a sealing loclt to removably engage the adjacent end of the inner member to seal the vaporizing chamber, and a semispherical dome removably secured to the outer member and spaced from and overlying the end of the inner member.

2. A vaporizer comprising an outer cylindrical member, an inner cyhndrical member, said members being concentrically spaced to form an exhaust gas passage, an annular head engaging the inner member and formed with a central threaded opening, and an inner exhaust tube concentric with and spaced from the inner member to form a vaporizing chamber, said inner exhaust tube haying a threaded end to engage the threaded opening in the head and provided at the opposite end with a sealing block to removablyv engage the adjacent end of the inner member and to seal the vaporizing chamber, a semispherical dome removably secured to the outer member and spaced from and overlying the end of the inner member, the outer member being formed at one end with an exhaust outlet opening communicating with the exhaust passage, and the inner member having short tubular sections communicating with the vaporizing chamber and extending outwardly beyond the outer member` 8. A vaporizer comprising an outer member, a concentrically spaced inner member and a concentrically spaced inner exhaust gas tube, the space between the inner and outer members forming an exhaust gas passage and the space between the inner member and the inner exhaust. tube forming a vaporizing chamber, means whereby the inner exhaust tube may be removably connected within the inner member at one end, and means carried by the opposite end of the inner exhaust tube to seal its connection at that end with the inner member, a fuel inlet leading to the vaporizing chamber, a vapor outlet leading from said vaporizing chamber, and spaced spiral bailes extending in the same direction around the inner exhaust tube, said baffles lying between the fuel inlet opening and the vapor outlet opening whereby to compel the fuel entering the inlet to spirally encircle the inner exhaust tube before reaching the vapor outlet, means for directing exhaust gases to the exhaust tube, and means carried by the vaporizer to direct the exhaust gases passing through such inner exhaust tube to the exhaust passage.

n testimony whereof I affix my signature.

`Kani, enana., [e s.)

lll() 

